Irwin 62r-9 8tw 1/2" x 2shk (585-45409)

Round shank is designed for use in power drills, drill presses, and boring machines with 1/2" or larger chuckFull-length heat treated bit guards against bending in heavy-duty applications and strengthens the bit where the greatest strain occursHeavy stem increases strength and rigidity while reducing vibration. Shank length is 2"Medium-fast screw point ideal for general wood boring applications